Plant and Method for Treating Loamy Debris

Abstract

The invention relates to a treatment plant for loamy surplus soil from a construction site. It is characterised in that said plant comprises: a vibrating hopper, known as inlet hopper; a conveyor, known as weighing, integrating continuous weighing means of the transported load; at least one storage tank for a binder; dosing means of the binder as a function of the weighing carried out at the level of the weighing conveyor; mixing means of a loam / binder ensemble for producing a material suitable as backfill which can be compacted as it leaves the plant.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This is a 371 national phase application of PCT / FR2006 / 001800 filed 24 Jul. 2006, claiming priority to French Patent Application No. FR 0508162 filed 29 Jul. 2005, the contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a treatment plant for loamy surplus soil from a construction site.[0003]The invention also relates to a method for treating this loamy surplus soil and resulting materials.[0004]The invention will find its principal application in making materials usable as fill materials from loamy surplus soil.[0005]However, this application is not limiting and the resulting materials could find other uses such as in embankments.BACKGROUND OF THE INVENTION[0006]In the field of public works, earthworks are often carried out either for building construction foundations or even for passage of pipelines or cables.[0007]The resulting surplus soil must either be utilised after tre...

AI Technical Summary

Benefits of technology

"The present invention proposes a treatment plant for loamy surplus soil from a construction site that can adjust the physical, mechanical, and chemical characteristics of the material. The plant can mix the surplus soil with one or more additives to modify its properties. It also includes a vibrating hopper, conveyor, storage tank for binder, dosing means, and mixing means to produce compact materials suitable for backfilling. The invention also provides a method for treating loamy surplus soil using the proposed treatment plant."

Problems solved by technology

It is certain that transporting this surplus soil requires a large number of lorry trips, leading to significant environmental and economic costs.

Furthermore, once the earthworks are completed, it may be necessary to backfill the trenches.

Because the surplus soil removed from the construction site is not homogeneous, it cannot be used as fill material.

In particular, the loam removed from the construction site comprises excessive water content and must be dried prior to being used as fill material.

However, with existing methods there is the problem of dosage of the additive relative to the quantity of loam treated.

The solutions proposed to date are not satisfactory on this point since they propose dosage:which is either manual dosage of the quantity of additive which is very imprecise, especially because it is not adjusted in real time,or automatic adjusting as a function of a volume of material to be treated which is also imprecise, since the density of the material to be treated is not known for certain,or again automatic adjusting as a function of the travel speed of a conveyor carrying the materials to be treated which is again a highly imprecise method considering the irregularity of the feed of the conveyor.

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